Dust distributing device



July 13, l1937. 4H, E, BRANDT 2,086,696

DUST DISTRIBUTING DEVICE `Filed Aug. 13. 1936 m from the chamber in which it much greater rate Patented July 13, 1937 aosassc PATENT OFFICE nUs'r ms'rnmu'rme nEvlcE Henry E. Brandt, North St. Paul, Minn. Appucaunn August 13, 1936. 'serial No. 95,811' I This invention relates to a device for distributing insecticides and particularlyv to a device for discharging and distributing insecticidesj in the form of dust. Such insecticides'are now commonly used on various kinds of plants and trees.

One problem encountered in making such devices, which are commonly called dusters, is l uniform discharge of the dust is contained. In some of the dusters the dust is discharged at a when the chamber is nearly when the chamber is nearly that of having a full of dust than empty.

It is an object of this invention `to provide a simple and eillcient construction of duster. one that is easily held and operated and which will discharge the dust uniformly. i It is another object of the invention to provide a duster comprising a casing having a chamber therein adapted to contain the dust, means for forcing air yunder pressure into said chamber to agitate the dust and keep it means spacedfrom said means for receiving dust uniformly from said chamber and discharging the same.

Itis still another object of the invention' to provide a duster comprising a casing having a chamber therein adapted to receive dust, means y for directing air under pressure into said chamber adjacent one end thereof and at one side thereof together with a conduit disposed at the opposite side of said chamber and having holes therein communicating with said chamber 35 through which the dust passes uniformly into said conduit. These and other objects and advantages of the invention will be fully set forth in the following description made in connection with the accompanying drawing, in which like reference characters refer to similar parts throughout the several views and in which:-

Fig. l is a view in side .elevation of the device; Fig. 2 is a central vertical longitudinal section through the device;

Fig. 3 is a vertical section taken substantially yon line 3-3 of Fig. 2 as indicated by the arrows;

and

Fig. 4 is a vertical section taken on line il-- oi' Fig. 1 as indicated by the arrows. y Referring to the drawing, a device is shown comprising a casing li. While this casing might be variously formed, in the embodiment of the invention illustrated it is shown as oi general cylindrical form. Said casing is closed at one end in motion land by the plateiia having its edge reversely bent into a bead 5b embracing the end of the cylindrical portion. Said casing has formed therein intermediate its ends a plurality of annular grooves or crimps 5c acting to hold in place a partition 6 having a flange 6a' grooved to fit in said grooves 5c. The other end of the casingv is provided with an end plate 5d also having its edge formed into a bead and bent or clamped around the` cylindrical end of said casing. Plate 5d extends inward a short distance from the cylindrical wall of said casing and is then bent at right angles outwardly to form" a cylindrical flange 5e which4 has screw threads pressed thereon. A cover 1 has a ange 1a with screw threads pressed thereon, which flange is adapted to screw onto the ange 5e to close said casing. A,V handle 8 formed of a small rod or wire has end portions extending along the outer side' of -flange 5d and secured thereto in any desirable manner as by soldering -or welding. Handle 8 has U-shaped bends therein at its end portions and its central portion is soldered or welded to the end of cover l. Casing 5 is divided by partition 6 into chambers Ef and 5g. A cup piston 9 is provided which will be formed of leather or similar material.- the same having its central portion held between plates l disposed on the reduced threaded portion Illa of a plunger rod IDb. Said portion Illa passes centrally through plates Ill and piston 9 and is provided with nuts il disposed at the remote. sides of plates lil respectively and holding the same clamped against the piston 9. A small plate l2 is disposed on top of the end plate 5a, the same having a semi-spherical central portion extend g outwardly therefrom and lforming with the pla e a a guide means for the plunger rod Hlb. While plate I2 could be variously fastened, in the embodiment of theinventonillustrated it is held by a plurality of lugs 5h cut from the plate 5a. and bent over the top side of plate l2. Plunger rod lilb is provided with an operating handle i3. A conduit i4 shown as a small pipe or tube extends from chamber 5f into chamber 5g, the same having an open end disposed adjacent plate 5d and having said end slightly ilattened and disposed against the wall of chamber 5y. A check valve is provided at the end of pipe I4 adjacent chamber 5f. While various forms of check valves might be used, in the embodiment of the invention illustrated a chamber 6a. is provided having a Wall with an aperture 6b y therein communicating with chamber 5f. A ball 6c is disposed in chamber 6a and is held in position to close aperture tb by a coiled compres- 55 sion spring 6d, one end of which engages ball Ec and the other end of which engages small anges or lugs 5e at one end of chamber do. A conduit i5 extends along the outer side ci* casing 5 opposite chamber 5g, the same being disposed at the side of casing 5 substantially diametrlcally opposite to the conduit iti. The Wall of the casing or chamber 5g which forms one side of conduit i5 is provided with a series of holes i@ which cornniunicate with chamber dg and with the interior of conduit i5. Conduit i5 is continued beyond the end of casing 5 in the form of a tube and is adapted to receive either a dust discharge nozzle il! or an extension tube i@ to which the nozzle can be secured. Nozzle il as shown as having one :dat side and one substantially semi-cylindrical side, the latter ,being provided with a multiplicity of small holes. Both the nozzle il and the tube i8 fit the discharge tube with a friction t. A handle member i9 is provided for the device, which handle will be made of leather, fabric or similar material. The ends of said handle are secured in dat metal lugs 20 soldered or welded to the side of casing 5. 'I'he lug 2d at the end of the casing is shown as also held by the crimped end of plate 5a. The handle i9 is disposed at the same side of the device as is the conduit I4.

In operation, the dust to be distributed or sprayed will be placed inchamber 5g, the cover 1 being readily removed for this purpose. The operator will then hold the casing 5 with one hand, said hand passing between handle I9 and the casing. With the casing so held the conduit I5 is normally at the top side thereof. 'I'he operator then directs the nozzle I'I as desired and operates the air pump formed by chamber 5f, piston 9 and attached parts by reciprocating handle I 3. Air is forced from chamber 5f past the check valve, spring 8d being compressed, and through the pipe Il. This air underA pressure is directed against the plate 5d and is deilected into the chamber 5g so `that the dust in said chamber is violently agitated or whirled about in a shower or` cloud. The air passa out through the holes I6 carrying a certain amount of dust therewith and this dust yand air is discharged in a plurality of streams or jets through the holes in nozzle l'l. The dust passes out through the holes I6 in a substantially uniform quantity or at a substantially uniform rate whether there be a. large amount of dust in chamber 5a or whether it is almost empty. As stated, the device is held with the conduit I5 at the upper-side so that the dust does not rest upon the side of the chamber having the holes I6 therein. With the described construction, therefore, the dust is agitated so that it is well distributed and nely divided; The dust as stated is also discharged at a uniform rate.

From the above description it is seen that applicant has provided a hand operated duster of extremely simple construction and yet one which is very eilcient. The device is light in weight, has few parts and is very easily operated. The outer side of casing l wil, of course, be painted or suitably coated so that it is well protected. The device has been amply demonstrated in actual practice. found to be very successful and eiflcient and is being commercially made.

It will, of course, be understood that various changes may be made in the form, details, arrangement and proportions of the parts, without departing from the scope of applicants invention, which generally stated, consists in a device capable of carrying out the objects above set forth in the parts and combinations of parts disclosed and denned in the appended claims.

What is claimed ls:- 1. A dusting device having in combination, a

casing having a cylindrical portion with a piston l therein, a handle-equipped plunger secured thereto constituting an air pump, said casing having a chamber adjacent said portion, `a conduit leading from said portion to adjacent one end of said chamber for discharging air from said pump against one end of said chamber at one side thereof, a second conduit extendingv longitudinally of said chamber at the opposite side thereof having a series of holes therein communicating with said chamber whereby dust in said chamber is violently agitated and passes uniformly into said second conduit.

2. A dustcr having in combination, a casing having a chamber therein, an imperforate conduit for delivering air under pressure into said chamber adjacent one end thereof and at one side thereof, a discharge conduit extending along the cuter side of said casing at the opposite side thereof for substantially the en'tlre length thereof and having a; plurality of holes therethrough communicating with said chamber whereby dust in said chamber is whirled about by said air and passes uniformly through said holes and into said second conduit.

3. A dusting device having in combination. a casing having a substantially cylindrical chamber therein adapted to receive dust, said chamber having a flange at one end extending inwardly at right angles to its cylindrical wall. a removable .cap within said danse. a conduit having an open end adjacentndA directed toward said flange.

- means for delivering air under pressure through said conduit, a second conduit adjacent the wall of said casing at a point substantially opposite said rst mentionedf conduit and having a plu rality ofholes therethrough communicating with said chamber whereby dust in said chamber will be blown about therein forming. a shower and will pass uniformly through said holes and into said second conduit.

4. A dusting device having in combination. a chamber adapted to contain dust, means for delivering air under pressure 4adjacent and 'against one end of said chamber to whirl said dust about in a shower therein. a conduit extending longltudinally along the wall of said casing, said casing having a plurality of holes spaced longitudinally along and in the wall of said chamber spaced from said ilr'st mentioned means andcommunicating with said conduit whereby said dust will pass out through said holes and be uni- 'formly discharged from said conduit.

5. A dusting device having in combination, a casing having a substantially cylindrical chamber therein, a flange extending inwardly at one end of said chamber and then extending outwardly longitudinally thereof at one end, a cap removably, secured to 'the outwardly extending portion of said flange, means for delivering air under pressureadjacent and against said inwardly extending flange, a conduit extending along the wall of said chamber substantially opposite said means and having a series of holes therethrough communicatlng with said chamber whereby dust is agitated in said chamber and passes uniformly through said holes into said conduit.

6. A dusting device having in combination, ya. casing having a chamber therein, an air pump chamber adjacent said chamber, a pipe extendmoschea 3 a dust chamber therein at one end of said air` pump chamber, a handle secured to one side ot said casing at the exterior of said air pump cham- 15 ber, means for, delivering air under pressure into said dust chamber, a discharge conduit extending along the side of said casing at the exterior of said dust chamber and at the opposite side oi' said casing from said handle and having a plurality of holes therethrough communicating with said dust chamber, said handle being constructed and arranged so that in operation said conduit will be at the top of said casing. 5 8. A dusting device having in combination.- a chamber adapted to contain dust, means extending into said chamber and to a point adjacent one end thereof for directing air under pressure against said end of said chamber at one side 10 thereof for causing a whirl of air in said chamber to stir up the dust therein, said chamber having a plurality of spaced holes along and through one wall thereof at the opposite side thereof through which dust may pass and discharge 15' means with which said holes communicate.

HENRY E. BRANDT. 

